when you blow out your O ring when taking a huge shit
Bill was taken to the hosptial after suffering a mount st helen
by G-Funk July 17, 2003
Ok, This Is The ACTUAL Mount St. Helens, so if your looking for a sexual definition, look again!

Mount St. Helens is an active-erupting volcano in Washington State. It began erupting lava in October of 2004.

Name: Mount St. Helens
Type: Stratovolcano
Age: 40,000 Years Old
Status: Active-Erupting
The Mount St. Helens volcano erupted again today. The ash cloud took out Air Force One.
by Jon March 14, 2005

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